[bc9ltjj]

The oven just stopped working. No power, no display on console. Changed one fuse (15 amp ceramic fuse). Power came back on but as soon as I pushed button to heat, the fuse is blown again. What is the next step? Thank you for your help.

[MicrowaveDisplaycom]

Originally Posted by bc9ltjj

The oven just stopped working. No power, no display on console. Changed one fuse (15 amp ceramic fuse). Power came back on but as soon as I pushed button to heat, the fuse is blown again. What is the next step? Thank you for your help.

If it blows as soon as you hit Start, that's almost always a shorted high-voltage capacitor.

You can buy parts and find helpful exploded views here: Appliance Parts Pros.com Discount Appliance Parts – Appliance Repair Parts

There is also a mini-manual hidden behind the control panel inside.

For critical microwave safety & disassembly tips, see all Microwave Display Repair Sharp Dacor GE General Electric & all Microwave Display Repair Sharp Dacor GE General Electric

[kawfeeman]

should use a multimeter to check HV Cap and also ohm out the mag tube as a short in the mag tub will do the same ...

[bc9ltjj]

Thank you for your reply. I am a novice in electronics so I am not quite sure what I need to do to test. Do I need to remove the unit from the wall to do the testing or to replace the parts? MicrowaveDisplaycom seems quite sure the problem is from HV capacitor. If so, is this a good bet to replace it and see if it corrects the problem? What I mean, what is the chance of Mag tube being defective?

[pcfucci]

I have a very similar problem. When I push the start button, the fuse blows as soon as it begins to draw high power, which is about 2 seconds after I push start. I have a multimeter, but not exaclty sure how to test the capacitor. Once I remove the two leads and touch the multimeter leads to the capacitor, what am I looking for to determine if it is bad? The microwave is about 10 yrs old.

Pete